![]() When black markings are used to provide enhanced contrast for white or yellow pavement markings, what widths and patterns of black markings should be used?.Is such a concept compliant with the MUTCD? I've heard about a crosswalk design that simulates 3-dimensional (3-D) objects in the roadway.Can this type of crosswalk meet the MUTCD requirements? As part of the project, we plan to install brick pavers or other similar treatments to serve as the crosswalks at intersections. We are installing brick sidewalks, benches, trees, and other "streetscaping" features along the business district streets. My city is trying to make the downtown area more aesthetically pleasing and pedestrian-friendly.Can I put any design or collection of art treatments in a crosswalk as long as the transverse white lines are present?.What are the warrants for installing a marked crosswalk at a midblock location?.Does the MUTCD allow intersection murals or widespread application of artwork to the street?.What are the approved uses of purple-colored pavement?.What are the approved uses of green-colored pavement?.What are the approved uses for red-colored pavement?. ![]() Given the answer to the previous question, could my agency set up the IIRPMs to be normally "off" and only turn them on (in a steadily-illuminated mode) for a certain number of seconds when a vehicle is detected approaching the curve?.Is it allowable to flash those IIRPMs when approaching vehicles exceed a given speed threshold? My agency is considering using internally-illuminated raised pavement markers (IIRPM) to supplement center line and lane line markings through a particularly severe horizontal curve to help road users navigate the curve.Is it illegal to cross a double yellow centerline on a road when making a left turn into a private driveway?.Why can't a single solid yellow center line be used on a roadway open to public travel?. ![]() The following alphabetical list of questions relates to the MUTCD Part 3 - Markings: Knowledge > Frequently Asked Questions Frequently Asked Questions - Part 3 - Markings
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